Circa (from Latin, meaning "around"), usually abbreviated c. or ca. (also circ. or cca.), means "approximately" in the English language, usually referring to a date. Circa is widely used in genealogy and historical writing when the dates of events are not precisely known.

When used in date ranges, the term "circa" is applied before each approximate date, while dates without "circa" immediately preceding them are generally assumed to be known with certainty.

Examples:

Ryan Gallant, (born May 25, 1982, in Waltham, Massachusetts, USA) is a professional skateboarder,his stance is goofy footed currently riding for Expedition One Skateboards, Independent Trucks, Bones Swiss Bearings, Gold Wheels, MOB Grip, Circa.^{[citation needed]}

He was raised in Southboro, Massachusetts, and he currently resides in Carlsbad, California. He was first noticed in the skate video PJ Ladd's Wonderful Horrible Life, a shop video from Coliseum skate shop located in Boston. He is also affiliated with True East Skateshop, which is an East Coast based chain of mom and pop shops. Gallant was first sponsored by Expedition One skateboards and had a video part in their first video entitled, "Alone". Gallant also had video parts in Gold Wheels, "Got Gold?", Transworld Skateboarding's 2005 video entitled, "First Love", and a short video montage in DC's DC Video. In April 2009, Gallant left his long time sponsor DC Shoes and established a sponsorship deal with Circa.

He is also featured in the 2007 video game, EA Skate as a playable character. He is also featured in the EA Skate sequels, Skate 2 and Skate 3.

Zane Lowe (born Alexander Zane Reid Lowe on 7 August 1973) also known as 'Zipper', is a radio DJ and television presenter. He was born in New Zealand and grew up in Auckland, where he was a presenter on the local music station Max TV, before moving to England. He presents BBC Radio 1's evening show, where he plays a variety of alternative music, including rock, punk, dance, drum and bass, and hip hop. He was also the presenter of the MTV Rocks show Gonzo, having been a former VJ on MTV since 1997, where he presented Brand:New. Lowe currently resides in London with his wife and two sons, Jackson and Lucius. He is best known for his boundless sycophancy.

Lowe's radio show can be heard on Mondays to Thursdays from 7pm to 9pm. Past and present features on his show have included:

Lowe's method of DJing is rather enthusiastic and fast-paced, similar to many hip hop DJs, with samples of radio stations, interview clips and Radio 1 stings thrown in between songs, along with the occasional sound of Lowe singing along to the music.